Shaft-centering lathe



. (No Model.)

A. WOOD.

SHAFT GENTERING LATHE.

No. 291,45 Patented Jam 1 1884.

a front elevation of my improved shaft-centering the rotary motion of the spindle C shall beim Fig. 3 an end view of the tail-stock F.

stock rests on the transverse slide H, and cartaining in the proper position the shaft f f is passed through the hollow spindle 0 till stop L, which is so placed as to allow the spin- PAT T- FFICE H AURIN wooD, or won-ons'rnn, MASSACHUSETTS.

' sHAFr-csw'reamc LATHE.

SPECIFICATION forming part of Letters Patent No. 291,456, dated January 1, 1884.

Application filed December 22, 1882.

T00) whom it'may concern:

Be it known that I, AURIN W001), a citizen of the United States, residing at WVorcester, in the county of Worcester and State of Massachusetts, have invented a new and useful Improvement in. Shaft Centering Lathes, of which the following is aspecification.

My invention relates to a combined lathe and centering device, and has for its object to provide facilities for centering and turning the end of a piece of shafting in the same machine, as a part of the preliminary process in my improved mode of manufacturing metal shafting.

My invention is illustrated in the accompanying drawings, in which Figure 1 shows a lathe; Fig. 2, aplan view of the same, and

Similar letters refer to similar parts in the several figures.

Ais the bed; B, the head-stock, with hollow spindle O, driving-pulley D, and chuck E.

F is the tail-stock, with spindle G. The tailries, in addition to the spindle Gand center I, the rotating spindle G, with its drill J and driving-pulley 1). Through the gear-wheels can, and a motion is imparted to the feed shaft h h, by which the slide-tool rest N is made to traverse the lathebed carrying the toolholder d and cutting-tool 0. At suitable dis tances from the lathe, upon posts M M or other suitable supports, I place the friction-pulleys g 9, arranged in pairs, for the purpose of susff to be centered and turned. The end of the shaft its end projects through the chuck E the distance required to be turned. The shaft is firmly grasped by the jaws of the chuck E, so that parted to the shaftj'f, and the end of the shaft is adjusted, by means of the jaws of the chuck, so that its center shall correspond with the axis of the hollow spindle C. The tailstoek is drawn toward the front of the lathe, sliding on the transverse bed H until it strikes the (No model.)

dle G',with the drill J, to come in line with the V center of the end of the shaft f f. The drill is then advanced toward the shaft f by the hand-wheel b, which, operating to advance the spindle G in the same manner as the spindle is acted upon in an ordinary lathe, at the same time advances the spindle G by means of the yoke or bar K, uniting the two spindles. Rotary motion is imparted to the spindle G, and the drill J is advanced, boring a small recess in the end of the shaft. The drill is then withdrawn and the tailstock F pushed toward the back of the lathe until stopped by the projection L, which is so placed as to allow the spindle G,with its center I, to come in line with the recessed center of the shaft.- The spindle G and center I are then advanced to support the end of the shaft, which, being rotated by the chuck F, is turned by the cutting-tool e. The tail-stock F slides transversely 011 the bed H, and the bed H also slides upon the lathe-bed, being held in its proper position by any of the well-known and commonly-used devices for the purpose.

I do not claim the use of a tail stoek capable of a transverse movement, for such has been before used and is a common construction of the ordinary turninglathe to permit a tapering shaft to be turned; neither do I claim the combination, with a tail-stock, of a-stationary drill-holding spindle; but

WVhat I do claim as my invention, and desire to secure by Letters ,Patent, is-

1. The combination, in a turning-lathe, with headstock B, spindle G, tail -stock F, and spindle G, of the rotating drill-holding spindle G, as described, and for the purposes set forth. 7

2. The combination, with the tail-stock of a turning-lathe, ofa rotating drill-holding spindle and suitable connected means for op erating the same, as and for the purposes set forth.

3. The combination, in a turning-lathe, of'

G, rotating spindle G,and the stops and L, low th e shaft whilebeing centered to rotate as described, and for the purposes set forth.- upon the peripheries of the pulleys, as and for '5. The combination, with a shaft-centering the purpose set forth. lathe, of one or more pairs of anti-friction AURTN WOOD.

5 pulleys, the pulleys of each pair overlapping \Vitnesses:

each other and b 11 3;. I@ 1ged.,iJ 1217 1963129 F WLER, sition with reference to the lathe, so as to a1 H. M. FOWLER. 

